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Motorcycle cylinders and cylinder heads
Toros M50 4T
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I installed this kit on a Romet ZXT 50 moped (vintage 2019), and it works perfectly. The biggest challenge with the installation was changing the timing chain and replacing the engine pins with the ones included in the kit. To change the chain you need to: 1. remove the magnet wheel housing so that it shows whole, as in the attached photo. 2. you need to somehow lock the magneto wheel to unscrew the magneto mounting screw. I was able to do this with a filter wrench on a strap that I found at a DIY store in the car section. I tightened the strap, and held the plastic handle in the opposite direction from the direction of unscrewing the screw with a regular wrench. This required a very large amount of force, but it worked. 3. after removing the nut, use the tool for removing the magnet wheels on 139fmb engines, available here on gmoto.pl. Screw it on, and then tighten the bolt firmly. This also required a lot of force. Next, we remove the magneto and be careful not to let the starter clutch pebbles fall out of it. 4.We remove the starter with the chain (remember to pull off the metal protection first. 5.Then we unscrew the screws to get to the timing chain. On my ZXT 50 model (2019), there were very strange screws and I was forced to force them out with a larger bit and unscrew them. Of course, I had to replace these bolts afterwards, but there are super bolts available here as "Seal cap bolt". The second problem was unscrewing the old pins and installing the new ones. Without special tools, this can be easily done by screwing in 2 size 10 nuts. And the one closer to the engine hold with a 10-gauge wrench, and unscrew the other one. The same way you can screw them on. The cylinder and head work great, there was a set of gaskets and spare valve seals. For this kind of money I highly recommend it!
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I installed in a 2010 Barton Fighter moped. After mounting the moped clearly came alive, it became very sprightly, the top speed also increased. After starting from first gear it can sweep the wheel, and after releasing the clutch faster it stands on the wheel, also when shifting to second gear the front end likes to lift gently. Overall, for this price I can confidently recommend this cylinder to everyone. I recommend 100%
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Hi. I purchased this product from your store at first I was skeptical because the price was very low but when the package arrived I was very pleasantly surprised by the quality of all the components and their fit also the whole kit was complete and ready for assembly. At the end I will add that everything works very well my bike got a second better life :)
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I ordered a crankcase for a Junak 902 - although it is listed as "fits to" on the item page, unfortunately it is not a perfect fit. Unlike the original, it does not have an input for the shift sensor cable.
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I have a Junak 901,I bought this kit because the motorcycle was already quite weak. I did the assembly for the first time, and it took me some time. So far I'm lapping , and I have no problem. I think Moretti products , are good parts and recommend.
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So the product is of mediocre quality, it's very rough, there's play everywhere and the segments supplied don't correspond to a 110cc but rather to an 88cc. I absolutely do not recommend this product.
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Fast delivery, very well packaged and complete in 4 words everything you need is. The company (site) wholeheartedly recommend and noti once again I will stop by and buy because it is good and specific
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Recommended website fast shipping all forms of payment with quality I'm satisfied with the cylinder everything laughs as it should so I recommend!
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Cylinder pin nuts and washers fmb139 super quality with attention to detail made of high quality materials I recommend to everyone
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Installation went without a problem threads not damaged the shipment itself also not damaged I recommend the product
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- very good value Moretti kit. - fits the 139 fmb engine for magpower r-stunt the chain and cylinder pins sold in this kit are essential because the kit raises the cylinder+head assembly by about 4 to 5 mm so the original chain and pins are too short. - be careful with the 4 pins, 2 are longer to fit or the 2 cylinder guide spacers have to be fitted as they fit into the engine block. - as already indicated in other comments, this kit is complete except for the oil seal between the cylinder head and the cylinder, which is not supplied. - For your information, in my case, the original 50cc starts on the fly, now with this kit I haven't managed to start it yet, but I think the problem is that it's a Euro4 with an ecu and an electric injector, so changing the original MEV1-030 A injector for a MEV1-080 injector to bring in more fuel still doesn't start, I think the ecu needs to be re-mapped, I'm continuing my research to make it work. I'm going to miss the good carburetor that was so easy to change for a bigger one.
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To make it all have arms and legs we will start from the highest to the lowest rating. Aesthetically everything looks very good :) The quality of materials I do not rate excellent because such is not (when trying to mount the cover to the front sprocket, the cover broke under not much force). The fit of the materials to the kit was the weakest, partly due to a packing mistake which can be forgiven, of course, but the biggest problem was with the valves. After adjusting to 00.6 and 00.8 (intake and exhaust) and driving about 20 km, the valves were in worse condition as originally installed from the previous set installed 2 seasons ago, the outlet in the head for the muffler is too narrow and you need to install a washer, grind the outlet in the head or grind the muffler. The set was missing the orings. After replacing a few parts from the old set to the new set, everything laughs and even better as I wanted The fault does not lie with the store, but with the manufacturer, who gave asses
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The 50 cm³ cylinder for the 139FMB 4-stroke engine is an excellent choice for anyone looking for a reliable and durable replacement or upgrade for their engine. The workmanship is precise and the fit is perfect - installation went smoothly. After installation, the engine runs perfectly again, with smooth running and good performance. The cooling fins ensure efficient heat dissipation, which increases durability. A particularly positive feature is the high-quality material, which promises a long service life. All in all, a top product with a great price-performance ratio! A clear purchase recommendation for anyone who wants to get their 139FMB engine back in top form. ⭐⭐⭐⭐⭐
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Hello My vehicle is a 2008 Kinroad Sprinter. Its engine capacity is 50ccm. Unfortunately, it is not a speed demon .So I decided to purchase at Gmoto.pl store, a full set to increase the capacity of the engine ie: head , cylinder , piston , rings , pins, etc. from 50ccm to 110ccm. After the installation of the purchased parts I am very impressed,the quality of the material from which the parts were made and the fit of the parts.Everything fit very well .So the installation of the parts was very fast and pleasant.Now it remains for me to calmly reach the engine and then we will see what this beast can do :) I really recommend the product and the store . Greetings Dawid
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My motorcycle is a Junak 901, capacity 107 cc. I highly recommend this kit, aesthetics of workmanship 10/10, quality 10/10, fit to the crankcases 10/10, the motorcycle continues to ride like it rides until it whistles, it seems to me that on this kit a little faster :D I have nothing to complain about, VERY RECOMMENDED !!! Probably the best set on the internet ! I looked everywhere, but such a complete set I have not yet found anywhere ! Take it while it's warm :D And while the price is so low :D
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Product arrived quickly and in full with fast processing and no complications. The price is fair and also very good value for the good quality. Shipping costs are also not as high as with other suppliers. As stated, the parts fit perfectly for my Romet Router WS 50 with four-stroke. I have installed everything new and everything is running great, just as I had hoped. I always order spare parts for my moped here and have never been disappointed.
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I own a Junak 901 rs tuning set of 50 to 110 gave positive results first start it smoked and very strongly blue after about 10 minutes it started to calm down and smoked a little white after driving about 50km it did not smoke at all the motorcycle became stronger stronger and more sprightly it achieves about 90km/h on the front gear 16 and the rear gear 38 the producer adds two more sealers to the valves in the head no hidden Watches
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I received a complete set, nothing was missing. Quality and workmanship at the level of the original parts dismantled, with the fit was not the slightest problem either. Only mark on the head the one for setting the timing, a little faintly visible, but after 5 minutes found, and as if someone also did not notice it is on the outside at 8 o'clock
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This tuning kit, which I purchased from GMOTO store, turned out to be the best in terms of: price, workmanship, fit, and aesthetics. I assembled the whole tuning kit there were no problems with it, very easy assembly. Now I am waiting for everything to arrive. I heartily recommend GMOTO store, and of course this tuning kit 110.
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Cool actually finished kit. In the store I got the information that there is no need to replace the shaft (as long as the previous one is in very good condition), and indeed it is. The piston does not reach the very end of the cylinder, but the compression is good, and the gear works, so for me it is ok. The sound of the machine has also improved significantly.
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Junak 902 2011r when replacing the cylinder for 110 you need to change the crankshaft power is greater as well as the combustion, but it is certainly better to have 110 than 50 through which even in the sand will not pass. When installing, be careful of the threads in the head because it is not too strong material you need to tighten in moderation.
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Very good build quality. The head with larger valves to this plus the replacement of the main nozzle in the carburetor gives incredible power. And if you replace the gearbox with more teeth in the engine it flies like a storm. 2 times faster and much more powerful. I sincerely recommend. I have taken a lot from this store and everything great.
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It is a complete set which fits perfectly and I had no problems with fitting it, I didn't even need a file to scrape off the excess casting, as it happens in such cast parts. I ride with it to this day, which is about a year now, and so far it promises to be great.
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Product compliant, with all the components needed for assembly, threaded rods that hold the cylinder head and cylinder longer, to fit perfectly with the original lower engine. All gaskets (base and cylinder head) fitted too, just perfect!
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the cylinder itself is great and the piston all the seals and piston rings . it's supposed to be a plug and go cylinder . NOT I have a jawu betka/kentoya twinshot and need to buy a new head because the original camshaft is not enough and need to adjust the valve .
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The cylinder fits perfectly to the engine 139FMB, the moped after such tuning laughs beyond recognition, I wanted to emphasize that I did not replace the gasser, it is the original from the fifty, only the nozzle replaced with a larger + head and everything runs perfectly.
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Bought by me the product is made of very good material each part fits together .Composition of the whole cylinder along with head and piston very well packaged each part separately and well . I am very satisfied with the product.I recommend .
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Zumico Gr200 change from 50 cm to 110 cm after the change I noticed a significant improvement in the power of the motorcycle what about the speed I don't know yet because I am just getting it ready also the sound from the muffler has changed now it sounds like a normal motorcycle I am very satisfied with the tuning
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Zumico Gr200 change from 50 cm to 110 cm after the change I noticed a significant improvement in the power of the motorcycle what about the speed I don't know yet because I am just getting it ready also the sound from the muffler has changed now it sounds like a normal motorcycle I am very satisfied with the tuning
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The kit complete and at first glance solid, castings made nicely, the thing that pleasantly surprised me was the spark plug in the kit, which was not in the description. The package came quickly and efficiently, now just to put it together and go! :)
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Everything talks as it should, it took me three hours to put this kit on and on the road I recommend! I've been driving for a few days now, I've already driven 100 km and the power is zero oil burning and tp.Everything as described fits perfectly and goes even better!
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Jinchen Knight, I wanted to change the cylinder to 110 cm, the goods without any complaints of workmanship, unfortunately, for other reasons I had to return the ordered goods, it was all done smoothly without any hassle, I greet the whole team of gmoto store.
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Hello I own an ogar 900 I bought parts from you such as: head cilinder piston rings pins and such and I am very satisfied with the - attitude to the customer - fast shipping - low price -parts are really in good quality
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Very good quality of workmanship parts all well-fitted significant improvement in power and sound only missing a new gasket for exhaust and intake bung need to remember to buy a new one on occasion unless the old one is not in the worst condition
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I bought the cylinder for Zipp Pro 50 motorcycle after easy and quick installation the motorcycle has a much better performance in speed. The kit from what I saw is made of solid material. It took me less than 30 minutes to install. I recommend buying it.
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As the only product I have a negative opinion because the quality of the thread in the nuts purchased was tragic both in terms of its appearance and the internal diameter on which the thread was made . I did not install them on the motorcycle .
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Junak 901 2014. Cylinder of good quality, fits perfectly to the engine 139FMB, the aesthetics of workmanship I can rate very good. All gaskets fit, there are no free spaces between the cylinder and the crankcase. I recommend
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good products unfortunately it broke at the tightening certainly an error of my share but I recommend the site several times that I order above and it and really genial price less expensive and product of quality
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Junak 901F 50cm3 capacityride it sensationally,and the products purchased from you emphasize the specific haracteristics of the motorcycle and increase its visual appearance from elegant to mega effectively nice
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Hello everyone I own a Zipp pro 50 moped I ordered a 72cc cylinder head gasket, it was a perfect fit and went around without any modifications. I rate the product as very good.
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